Cikcuit-cohtim triltg device



H. A. DOUGLAS CIRCUIT CONTINUING DEV IGE Original Filed Jan. 5.

Patented Aug. 3, 1926.

U H E S? HARRY A. DOUGLAS, OF BRONSON, MICHIGAN.

CIRCUIT-CONTINUING DEVICE.

Original application filed January 5, 1921, Serial No. 440,486. Dividedand this application filed December 3, 1923.

My invention relates, generally speaking, to circuit continuing devicesand is inclusive of a metallic shell, a mounting therefor, a clipsecured to the shell, this clip being as sembled 'with the mounting, andwire at taching means provided upon the outer end of said clip.'

I will explain my invention more fully by reference to the accompanyingdrawings showing the preferred embodiment thereof and in which Fig. 1 isa longitudinal sec tional view; Fig. 2 is a rear end view of thestructure shown in Fig. 1; Fig. 3 is a sectional View on line 33 of Fig.1; Fig. 4 is a perspective view of an element that takes part inassembling portions of the structure; Fig. 5 is a sectional view of apart of the device shown in Fig. 1, taken on line 5 5; and Fig. 6 is asectional view on line G6 of Fig. 1.

Like parts are indicated by similar characters of reference throughoutthe different figures.

By reason of the illustrated construction, the mounting sleeve 1 may bemetallic. This sleeve is provided with 'a flange 2 carrying sleeverivets 3 that assemble the insulating mounting plate 4 with the base ofthe mounting sleeve. These rivets also serve to permit of the passage ofmounting screws through the base flange of the mounting sleeve into somesuitable support, such, for example, as the dashboards of automobiles.The metallic shell 5 is surrounded and substantially housed by themounting sleeve, this metallic shell being suitably assembled. with themounting plate or insulating body 4 that fixedly unites the rear ends ofthe shell and sleeve. The forward end of the shell is formed withbayonet channels 6 which are adapted to receive bayonet projections 7carried by the base of the incandescent lamp bulb 8, such lamp baseconstituting a contact carrier. The bulb of the lamp projects forwardlybeyond the shell and sleeve and in order that the passage of lighttherefrom may be limited to a definite path the bulb is partiallyenclosed by a cowl 9 which is mounted upon the reduced forward end ofthe shell 1, the base of the cowl engaging the shoulder formed upon theshell where the reduced portion is connected with the balance of theshell.

A single pole structure is illustrated in which case there is but onelamp base con- Serial No. 678,210.

tact 10 upon the inner face of the lamp base and but one forwardlyspring pressed contact 11 engageable with the contact 10,

one terminal of the lamp filament being shell is formed with rearwardlyprojecting tongues 16 that extend through the plate 4 to prevent theshell from turning and to take part in fixing the angular relation ofthe shell to the plate. Each clip is formed with an angular car 17 thatengages the rear face of the plate 4 to complete the assembly of theplate andshelll/Vhere the structure is a so-called single pole structureone of the clips is provided with a rearward continuation '18 havingthreaded holes 19 that receive the binding screws 20 the serve toconnect the current conducting wire with the clip provided with theextension whereby the shell connected with the clip may be grounded.There is a flat terminal plate 21 that carries contact 11 in rivetedconnection therewith at the front end of the plate, the rear end of theplate being formed with a threaded hole that receives a binding screw 22for connecting the plate and the contact thereon in circuit. There is ametallic sleeve 23 for guiding the plate 21 which is movablelongitudinally of the sleeve 23 enclosing it. The rear end of the sleeve23 is formed with flanges 24 that define an annular channel betweenwhich the mounting plate 4 is gripped. A coiled spring 25 surrounds thesleeve 23, being compressed between the corresponding contact 11 and theforward flange 24. The contact 11 is thus forwardly spring pressed intoengagement with its complemental contact 10 when the contact carriercarrying such complemental contact is fully assembled with the forwardend of the shell 5.

lVhile I have herein shown and particularly described the preferredembodiment of my invention I do not wish to be limited to the precisedetails of construction shown as changes may readily be made Withoutdeparting from the spirit of my invention, but having thus described myinvention I claim as new and desire to secure by Letters Patent thefollowing:-

A circuit connector including a metallic shell; a mounting therefor; aclip secured to the shell by means of an car which is struck from theshell, this clip being as sembled with the mounting; and Wire atltachin-g means provided upon the outer end of said clip.

In Witness whereof, I hereunto subscribe my name this second day ofOctober, A. D.,

HARRY A. DOUGLAS.

